elton



O. ELTON.

GOVERNOR CONTROLLED MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATIQN FILED MAY 21. I915.

Patented Nov. 18, 1919. .2.SHEETS-SHEET l.

0. ELTON.

GOVERNOR CONTROLLEDVMEICH'ANISM FOR INTERNAL COMBUSTION ENGINES.

I APPLICATION FILED MAY 21, 1915. 1,322,002.

Patented Nov. 18, 1919.

2 SHEETS-SHEET 2.

ED STATES FATE OLAF ELTON, 0]? PORT WASHINGTON, WISCONSIN, ASSIGNOR TO GILSON MANUFACTUR- IN G COMPANY, OF PORT WASHINGTON, WISCONSIN.

GOVERNOR-CONTROLLED MECHANISM FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Nov. 18, 1919.

Application filed May 21, 1915. Serial No. 29,563.

To all whom it may concern Be it known that I, OLAF ELTON, a citizen of the United States, and resident of Port WVashington, in the county of Ozaukee and State of Wisconsin, have invented certain new and useful Improvements in Grovernor-Controlled Mechanism for Internal- Combustion Engines; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention refers to internal combustion engines of the hit and miss type, and has for its primary object to provide improvements in the operating mechanism whereby the scope and fineness of adjustment may be obtained to render the engine responsive to various load conditions.

Specific objects of my invention are to provide means in connection with the usual oscillatory valve rod-controlling arm for manually adjusting the scope ofmovement of said arm independently of its governorcontrolled movement, whereby the exhaust valve is held open at any intermediate point between the maximum and minimum engine speed;

To provide means for adjusting a roller shoe in connection with said arm, whereby such adjustment may be effected at a point clear of the fly-wheel while the engine is running To provide a housing for the actuating cams which impart movement to certain of the engine elements, whereby the same are arranged to run in an oil bath and are protected, the said housing being formed with a bearing for the valve-rod and also a hearing for an arbor shaft.

A further object of my invention is to provide a guide and stop for the free end of the oscillatory arm whereby the same is held in a fixed suspended position under spring pressure when the engine is running at or slightly above minimum speed, the guide serving to prevent engagement of the arm with its governor-controlled operating sleeve except under conditions when it is advantageous to lock the valve rod.

With the above objects in View the inven tion consists in certain peculiarities of construction and combination of parts as set forth hereinafter With referenceto the ac companying drawings subsequently claimed. I i

In engines of the above mentioned type, it is usual to employ a governor-controlled sleeve that is mounted upon the engine crank-shaft and moved longitudinally thereon by a governor connection. A hit or miss engagement between the valve-rod and an interposed member is dependent upon the position of the sleeve, and the exhaust valve may be held open to thus break the vacuum upon the suction stroke of the piston whereby a gas charge is skipped, this operation being governed by the speed and load conditions to which the engine is subjected.

In the drawings Figure 1 represents a sectional elevation of a fragment of an engine-bed equipped with mechanism embodying the features of my invention, the section being indicated by line 11 of Fig. 2;

Fig. 2, a plan view of the same with parts broken away and in section to more clearly illustrate certain structural features;

Fig. 3, a detailed side elevation of a portion of the crank-shaft and its associated mechanism, the same being partly in section, as indicated by line 3-3of Fig. 1;

Fig. 4:, a detailed cross-section through an end of a valve-rod controlling arm, the section being indicated by line l-t of Fig. 1, and

Fig. 5, a detailed plan view on a reduced scale of the lower part of a housing element for the valve actuating mechanism.

Referring by characters to the drawings, 1 represents a fragment of an engine-bed provided with a journal-box 2 in which is mounted one end of an engine crank-shaft 3. The bed 1 is provided with a shell-like housing member 4, which is closed by a cap 5, having a neck portion 5 that forms onehalf of a two part journal bearing in con nection with the housing members, in which journal bearing is revolubly mounted an arbor 6. The inner end of the arbor carries a gear-wheel 6, which meshes with a pinion 3 that is mounted upon the crank-shaft and by means of which a half revolution is imparted to the arbor with each complete revolution of the crank-shaft. The outer end of the arbor which projects into the housing carries a sparking cam 7 that engages a roller 7 which roller is mounted upon the end of a reciprocative circuit make and break bar .8, the cam being adapted to impart motion vided with a'suitable double'channeledneck 4, which forms a slide bearing for the bar 8, and a shde bear ng for the head 9 of the valve-rod 9. The housing neck t is closed by a cap 4", which is bolted to the neck 4: and also to the cap 5. The head 9 of the valve-rod projects into the housing 4 and carries a roller 10, which is held against the face. ofa Valve-cam 11 on the arbor 6 by a coiled spring 12 that is suitably connected to the head and the neck 4 of said housing. Hence it will be seen that the cams and ends of the valve-rod and bar 8 are all incased within the housing and access thereto may be had by removing the cap 5 of said housing, which cap is pro vided with'an aperture 6 whereby the housing cavity is filled with oil to cause the parts therein to run freely. The head 9 is provided with a tappet-plate 14C. The tappet-plate is formed with an engaging lip 13 that is spaced back from the extrem'e inner end of said plate as shown, whereby the plate-end constitutes a rest for a noseplate 16 that is ailixed to the adjacent end of a vertically oscillatory valve-rod controlling arm 17 The arm is pivotally mounted upon a stud 18, which is carried by an ear -18v that projects from the cap portion 5 of the housing, and a second ear 18 that extends from the neckportion 5 'of'said cap. The rear end of the arm 17 is forked and carries a pin 19, upon which is revolubly mounted an eccentric'stud 20 that serves as a trunnion for a roller 21, which constitutes a revoluble' shoe. The face of the roller is beveled to conform to the face of a complementary beveled collar 22 of a'sleeve 22, and the corner edges .of the roller, as shown, are rounded to prevent scoring or Wear of the beveled face of the collar. Attention is directed to the fact that the bearing points for the arm stud 18 are spaced apart a distance equal to or greater than the' distance between the arm fulcrum and the point of contact between the sleeve and shoe. Hence liability of the lateral play of the arm at its nose end is reduced to a-minimum. The sleeve is reciprocatively mounted upon the end of the crank-shaft 3 and is grooved for the reception of companion ends of bell-crank levers 23, which constitute governor arms. pivotally connected in the usual manner to a fiy-wheel 2 1 which is rigidly secured to the, crank-shaft and the long arms of the bell-cranl levers 23 vare weighted and connected by a coiled spring 25, the tension'of which maybe adjusted by eye-bolts 26 and nutsconuecting the spring with said and The levers are bell-crank levers. It will be observed that the grooved portion of the sleeve 22 which is engaged by the ends of the short arms of the bell-crank levers is provided with transverse pins 22", which are adapted to engage the ends of said arms and thus hold the sleeve against rotary movement with the shaft.

The nose end of the rocker arm 17 is guided held against lateral movement by a loop 27 which projects upwardly from the cap 4", and the bridge piece 27 of said loop is arranged to engage and hold the nose of the arm a predetermined distance from the tappet plate 14;. The arm nose is normally held in this inactive position against the bridge piece 27 of the loop by a coiled spring 0, interposed between the arm and the cap t. Lateral movement or deflection of the arm 17 is thus prevented by the guide loop 27 and by the widely spaced ears 18 and 18 supporting the pivot stud 18. The nose of the arm being held in its inactive position by the bridge piece 27 of the loop 27, the roller 21 will not ongage the beveled face of the sleeve collar 22 when it is in its normal position. l l ence friction and wear are avoided except at such times as the speed of the engine is increased and the collar 22 engages the roller 21 and swings the nose of the arm 17 down into position to engage with the tappet plate 14.

The eccentric stud 20 is arranged to be adjusted about the pin 19 by means of a crank-arm 28, which, in this instance, is an integral part of the eccentric stud, and said crankarm in turn, is connected to an adjusting lever 29 by a link 30. The adjusting lever 29 is pivotally mounted upon the arm 17 near its nose end, the said lever being provided with a spring-control]ed detent 29, which is adapted to engage any one of a series of notches 31 that are formed in a segment which in this instance, constitutes a part of the arm. By locating the shoe adjusting mechanism at the nose end of the arm 17 it will be observed that said mechanism is clear of the fly-wheel and other moving parts of the engine, whereby it is accessible and can readily be adjusted by the operator when the engine is in motion, without liability to accidents.

Referring especially to Fig. 1 of the drawings, it will be seen that the governorcontrolled sleeve 22 is in its normal position of rest and the eccentric bearing-stud 20 of the rotary shoe 21 is adjusted to one of its extreme positions whereby the rotary shoe which is clear of the collar portion of the sleeve, will permit the nose 16 of the arm 17 to assume its maximum distance from the tappet-plate 14, the said nose be ing held in this position by the spring 0, which acts to force said nose against the bridge piece of the guide loop 27. Hence it is manifest that the parts shown in this extreme position are capable of their full scope of movement and that the nose of the arm 17 will not engage the tappet-plate 14 until such time as the engine develops its maximum speed, causing the sleeve collar 22 to move outwardly, whereby it will engage the arm shoe 21 and operate the arm, the nose 16 of which in turn engages the shoulder 13. When this engagement takes place it is apparent that the valve-rod will beheld in opposition to its actuating spring, and the head of said rod will not travel to conform to the movement of the valve cam. Thus the exhaust valve, not shown, will be held open. Should it be desired to have the exhaust valve held open at a lesser speed than maximum, it will be readily understood that the operator by turning the lever 29 toward the crank shaft 3 and locking the same in adjusted position with the detent 29, the roller 21 will be shifted closer to the crank shaft 3 and the arm 17 will be actuated by the collar 22 at less than maximum engine speed to hold the exhaust valve open. Hence a sensitive adjustment is effected by rocking the eccentric bearing stud 20, it being also understood that, in addition to this adjustment, the ordinary adjustment of the governor may be made, but the adjustment for the arm movement can be ac complished while the engine is in operation.

1 claim:

1. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tappet-rod, a cam-carrying arbor in gear connection with the shaft for actuating the rod, an oscillatory arm having at one end a nose engageable with the tappet-rod, an adjustable shoe carried by the arm adjacent its other end and engageable with the sleeve, and an adjusting mechanism carried at the nose end of the arm and operatively connected to the shoe.

2. 111 an internal combustion engine the combination of a crankshaft, a governor controlled sleeve thereon, a tappetrod, a cam-carrying arbor in gear connection with the shaft for actuating the rod, an oscillatory arm having a nose engageable with the tappet-rod, a shiftable shoe carried by the arm and engageable with the sleeve, a spring engaging the arm and holding the shoe in position for engagement with said sleeve, adjusting mechanism associated with the nose end of the arm, and a link connecting the adjusting mechanism and shoe.

3. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tappet-rod, a

cam-carrying arbor in gear connection with the shaft for actuating the rod, an arm having a nose at one end engageable with the tappet-rod, a shiftable shoe mounted upon the opposite end of the arm engageable with the sleeve, a notched segment on the nose end of said arm, a lever carried by the arm, a detent engageable with the segment notches, and a link connecting the lever and shiftable shoe.

4. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tappet-rod, a cam-carrying arbor in gear connection with the shaft for actuating the rod, an arm having a nose at one end engageable with the tappet-rod, a shiftable shoe mounted upon the opposite end of the arm engageable with the sleeve, means for adjusting the shoe comprising a lever mounted on the nose end of the arm, a link connecting the lever and shoe, and locking means connecting said lever and arm.

5.1n an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tappet-rod, a cam-carrying arbor in gear connection with the shaft for actuating the rod, a springcontrolled pivoted ann having a nose at one end engageable with the tappet-rod, an adjustable eccentric mounted at the opposite end of said arm, a rotary shoe mounted upon the eccentric, and means for adjusting and locking the eccentric whereby the position of the rotary shoe is changed relative to the end of the arm and said sleeve, and a guide loop engagcable with the nose end of the arm for holding the nose a predetermined fixed distance from the tappet-rod.

6. In an internal combustion engine the combination of a crank-shaft, a governor controlled sleeve thereon, a tappet-rod, a cam-carrying arbor in gear connection with the shaft for actuating the rod, a spring controlled oscillatory arm having a nose at one end adapted to engage the tappetrod, a guide for the end of said arm, an eccentric stud revolubly mounted in the op posite end of said arm, lever mechanism connecting the. eccentric and nose end of the arm for adjusting the same, means for look- .ing the lever mechanism, and a revoluble shoe mounted upon said'eccentrio and engageable with the sleeve.

7. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tap pet-rod, a camcarrying arbor in gear connection. with the shaft for actuating the rod, a bearing for the tappet-rod, an oscillatory arm having a nose at one end adapted to engage the tappet-rod, an eccentric stud revolubly mounted in the opposite end of said arm, lever mechanism connected with the eccentrio stud for adjusting the same, means for locking the lever mechanism, a revoluble shoe mounted upon said eccentric stud and engageable with the sleeve, a coiled spring interposed between the arm and tappet-rod bearing for holding the shoe in position to be engaged by'the sleeve, and a guide loop extending from the tappet-rod bearing around the nose end of the aforesaid arm.

8. In an internal combustion engine the combination of a crank-shaft, -a governorcontrolled sleeve thereon, a tappet-rod, a

cam-carrying arbor in gear connection with the shaft for actuating the rod, a pivoted spring-controlled arm having a nose engageable with the tapp'et-rod, an eccentric stud mounted in the opposite end of the arm, a crank-arm extending from the stud, an ad justing lever carried by the arm, a link connecting the adjusting lever and crank-arm of the eccentric stud, means associated with said spring-controlled arm for locking the adjusting lever, and a revoluble shoe mounted upon the aforesaid eccentric stud and engageable with the sleeve.

9. In an internal combustion engine the combination of a crank-shaft, a governorcont'rolle'd' sleeve thereon provided with a bevel-faced collar, a tappet-rod, a camcarrying arbor in gear connection with the shafit for actuating the rod, a pivoted spring-controlled arm having a nose engageable with the tappet-rod, an eccentric stud mounted in the opposite end of the arm, a crank-arm extending from the stud, an adjusting' lever carried by said spring-controlled arm, a link connecting the adjusting lever and crank-arm of the eccentric stud, means associated with said springcon-trolled arm for locking the adjusting lever, and a revoluble shoe mounted upon the aforesaid eccentric stud and provided with a beveled face engageable with the beveled face of the collar and having rounded edges.

10. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tappet-rod, a

cam-carrying arbor in gear connection with the shaft for actuating the rod, an oscillatory arm engageable at one end with the sleeve and controlling the operation of the tappet-rod, fulcrum bearings for the arm spaced apart a distance at least equal to the distance between the arm fulcrum and its point of contact with the governor sleeve.

11. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tappet-rod, a cam-carrying arbor in gear connection with the shaft for actuating the rod, an oscillatory arm engageable at one end with the sleeve and at the other end with the tappct rod, and fulcrum bearings for the arm spaced apart a distance at least equal to the distance between the arm fulcrum and its point of contact with the governor sleeve.

12. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon, a tappet-rod, a cam-carrying arbor in gear connection with the shaft for actuating the rod, an osci1- latory arm having at one end an adjustable shoe engageable with the sleeve and having at the other end a nose engageable with the tappet-rod, fulcrum bearings for the arm spaced apart a distance at least equal to the distance between the arm fulcrum and its point of contact with the governor sleeve, and an adjusting mechanism carried by the nose end of the arm and connected with said shoe.

13. In an internal combustion engine the combination of a crank-shaft, a governorcontrolled sleeve thereon provided with a bevel-faced collar, a tappet-rod, a camcarrying arbor in gear connection with the crank shaft for actuating the rod, a pivoted spring-controlled arm having a nose at one end engageable with the tappet-rod, an ceecentric stud mounted at the opposite end of the arm, a crank-arm extending from the stud, an actuating lever carried by the arm, a link connecting said actuating lever and crank-arm, means associated with said pivoted spring-controlled arm for locking the actuating lever in different positions, and a revoluble shoe mounted on said eccentric stud and engageable with the sleeve, the same being provided with a beveled face opposing the beveled face of the sleeye collar.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of VVisconsin, in the presence of two witnesses.

OLAF ELTON.

Witnesses:

HARRY W. BOLENS, G120. W. YOUNG. 

